[gnome-flashback] common: remove gf_bg_set_surface_as_root_with_crossfade

[Alberts Muktupāvels <muktupavels src gnome org>]

commit d04eda9f09ea4fecf4fbcce3188d55409f76f1a3
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Mar 20 18:24:31 2021 +0200

    common: remove gf_bg_set_surface_as_root_with_crossfade

 gnome-flashback/libcommon/gf-bg.c | 35 -----------------------------------
 gnome-flashback/libcommon/gf-bg.h |  4 ----
 2 files changed, 39 deletions(-)
---
diff --git a/gnome-flashback/libcommon/gf-bg.c b/gnome-flashback/libcommon/gf-bg.c
index 360cd5c..68230bc 100644
--- a/gnome-flashback/libcommon/gf-bg.c
+++ b/gnome-flashback/libcommon/gf-bg.c
@@ -1259,41 +1259,6 @@ gf_bg_set_surface_as_root (GdkScreen       *screen,
        gdk_x11_display_ungrab (gdk_screen_get_display (screen));
 }
 
-GnomeBGCrossfade *
-gf_bg_set_surface_as_root_with_crossfade (GdkScreen       *screen,
-                                          cairo_surface_t *surface)
-{
-       GdkDisplay *display;
-       GdkWindow *root_window;
-       cairo_surface_t *old_surface;
-       int      width, height;
-       GnomeBGCrossfade *fade;
-
-       g_return_val_if_fail (screen != NULL, NULL);
-       g_return_val_if_fail (surface != NULL, NULL);
-
-       root_window = gdk_screen_get_root_window (screen);
-
-       width = gdk_screen_get_width (screen);
-       height = gdk_screen_get_height (screen);
-
-       fade = gnome_bg_crossfade_new (width, height);
-
-       display = gdk_screen_get_display (screen);
-       gdk_x11_display_grab (display);
-       old_surface = gf_bg_get_surface_from_root (screen);
-       gf_bg_set_root_pixmap_id (screen, surface);
-       gnome_bg_crossfade_set_start_surface (fade, old_surface);
-       cairo_surface_destroy (old_surface);
-       gnome_bg_crossfade_set_end_surface (fade, surface);
-       gdk_display_flush (display);
-       gdk_x11_display_ungrab (display);
-
-       gnome_bg_crossfade_start (fade, root_window);
-
-       return fade;
-}
-
 /* Implementation of the pixbuf cache */
 struct _SlideShow
 {
diff --git a/gnome-flashback/libcommon/gf-bg.h b/gnome-flashback/libcommon/gf-bg.h
index ffc8794..b7e40b8 100644
--- a/gnome-flashback/libcommon/gf-bg.h
+++ b/gnome-flashback/libcommon/gf-bg.h
@@ -24,8 +24,6 @@
 #include <gdk/gdk.h>
 #include <gio/gio.h>
 #include <gdesktop-enums.h>
-#include <libgnome-desktop/gnome-bg-crossfade.h>
-#include <gdesktop-enums.h>
 
 G_BEGIN_DECLS
 
@@ -56,8 +54,6 @@ cairo_surface_t *gf_bg_create_surface           (GfBG                  *bg,
 void             gf_bg_set_surface_as_root      (GdkScreen             *screen,
                                                 cairo_surface_t       *surface);
 
-GnomeBGCrossfade *gf_bg_set_surface_as_root_with_crossfade    (GdkScreen *screen,
-                                                              cairo_surface_t *surface);
 cairo_surface_t *gf_bg_get_surface_from_root (GdkScreen *screen);
 
 GdkRGBA *gf_bg_get_average_color_from_surface (cairo_surface_t *surface);